CN215876878U - Caprolactam material recovery unit - Google Patents
Caprolactam material recovery unit Download PDFInfo
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- CN215876878U CN215876878U CN202122052143.5U CN202122052143U CN215876878U CN 215876878 U CN215876878 U CN 215876878U CN 202122052143 U CN202122052143 U CN 202122052143U CN 215876878 U CN215876878 U CN 215876878U
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- water inlet
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Abstract
The utility model discloses a caprolactam material recovery unit which comprises a shell and at least two concentration modules arranged in the shell, wherein one end of the shell is provided with a water inlet, the other end of the shell is provided with a water production port and a concentrated solution recovery port, the water inlet and the concentrated solution recovery port are respectively communicated with a material tank through pipelines, the concentration modules are positioned between the water inlet and the water production port as well as between the water inlet and the concentrated solution recovery port, a buffer cavity is arranged between every two adjacent concentration modules, and a pressure compensation device is arranged in the buffer cavity. The utility model improves the utilization rate of each concentration module while improving the concentration efficiency.
Description
Technical Field
The utility model relates to a caprolactam material recovery unit, and belongs to the technical field of waste liquid recovery and treatment.
Background
The polymerization reaction of nylon 6 belongs to equilibrium reaction, so monomer caprolactam and cyclic polymer of about 10% can be produced in the production of nylon 6 slices, especially cyclic dimer can produce serious harm to the polymerization process, in the actual production, pure water and nylon 6 slices need to be used for countercurrent extraction in an extraction tower, unreacted caprolactam and oligomers thereof in the slices enter the pure water, the slices are dried and cooled into finished products after extraction, and the extracted water contains about 10% of caprolactam and oligomers, so that the caprolactam extraction aqueous solution is recycled for avoiding environmental pollution, saving resources and reducing cost. At present, the conventional multi-effect evaporation process is mainly used in the caprolactam extraction water evaporation and concentration process, so that the energy consumption is high and the cost is high.
Disclosure of Invention
The utility model aims to provide a caprolactam material recovery unit, which improves the utilization rate of each concentration module and prolongs the service life of the whole caprolactam material recovery unit.
In order to solve the technical problems, the utility model adopts the technical scheme that: a caprolactam material recovery unit comprises a shell and at least two concentration modules arranged in the shell, wherein one end of the shell is provided with a water inlet, the other end of the shell is provided with a water production port and a concentrated solution recovery port, the water inlet and the concentrated solution recovery port are respectively communicated with a material tank through pipelines, the concentration modules are positioned between the water inlet and the water production port, and between the two adjacent concentration modules, a buffer cavity is arranged, and a pressure compensation device is arranged in the buffer cavity.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the concentration module is a reverse osmosis module or a nanofiltration module.
2. In the above scheme, a one-way valve is installed on the water inlet pipeline.
3. In the above scheme, the pressure compensation device is an impeller type supercharging device or a diaphragm type supercharging device.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the caprolactam material recovery unit, the buffer cavity is arranged between the two adjacent concentration modules, and the pressure compensation device is arranged in the buffer cavity, so that pressure compensation is increased before liquid enters the next concentration module from the buffer cavity, the utilization rate of each concentration module is improved, and the service life of the whole caprolactam material recovery unit is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a caprolactam material recovery unit of the present invention.
In the above drawings: 1. a housing; 2. a concentration module; 3. a water inlet; 4. a water producing port; 5. a concentrated solution recovery port; 6. a buffer chamber; 7. a pressure compensation device.
Detailed Description
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
Example 1: a caprolactam material recovery unit comprises a shell 1 and at least two concentration modules 2 arranged in the shell 1, wherein one end of the shell 1 is provided with a water inlet 3, the other end of the shell is provided with a water production port 4 and a concentrated solution recovery port 5, the water inlet 3 and the concentrated solution recovery port 5 are respectively communicated with a material tank through pipelines, and the concentration modules 2 are positioned between the water inlet 3 and the water production port 4 as well as between the concentrated solution recovery ports 5;
a buffer cavity 6 is arranged between two adjacent concentration modules 2, and a pressure compensation device 7 is arranged in the buffer cavity 6.
The concentration module 2 is a reverse osmosis module or a nanofiltration module.
The pressure compensation device 7 is an impeller type supercharging device or a diaphragm type supercharging device.
Example 2: a caprolactam material recovery unit comprises a shell 1 and at least two concentration modules 2 arranged in the shell 1, wherein one end of the shell 1 is provided with a water inlet 3, the other end of the shell is provided with a water production port 4 and a concentrated solution recovery port 5, the water inlet 3 and the concentrated solution recovery port 5 are respectively communicated with a material tank through pipelines, and the concentration modules 2 are positioned between the water inlet 3 and the water production port 4 as well as between the concentrated solution recovery ports 5;
a buffer cavity 6 is arranged between two adjacent concentration modules 2, and a pressure compensation device 7 is arranged in the buffer cavity 6.
The water inlet pipeline is provided with a one-way valve.
The pressure compensation device 7 is an impeller type supercharging device or a diaphragm type supercharging device.
During the use, the material gets into concentrated module 2 by water inlet 3, through the filtration of multistage concentrated module 2, will produce water and discharge, through the setting of buffer chamber 6 and pressure compensation device 7 between the adjacent concentrated module for liquid increases pressure compensation before getting into next concentrated module 2 by buffer chamber 6, overcomes the decay of the pressure that continuous concentration leads to and concentrated module 2 efficiency.
By adopting the caprolactam material recovery unit, a buffer cavity is arranged between two adjacent concentration modules, and a pressure compensation device is arranged in the buffer cavity, so that pressure compensation is increased before liquid enters the next concentration module from the buffer cavity, the attenuation of pressure and the effectiveness of the concentration module caused by continuous concentration is overcome, the utilization rate of each concentration module is improved while the concentration efficiency is greatly improved, and the service life of the whole system is prolonged.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. A caprolactam material recovery unit which is characterized in that: including casing (1) and at least two concentrated modules (2) that set up in casing (1), the one end of casing (1) is provided with water inlet (3), the other end is provided with produces mouth of a river (4) and concentrate recovery mouth (5), water inlet (3) and concentrate recovery mouth (5) are respectively through pipeline and material case intercommunication, concentrated module (2) are located water inlet (3) and produce between mouth of a river (4), the concentrate recovery mouth (5), are provided with a cushion chamber (6) between two adjacent concentrated modules (2), be provided with a pressure compensation device (7) in cushion chamber (6).
2. A caprolactam material recovery unit according to claim 1, wherein: the concentration module (2) is a reverse osmosis module or a nanofiltration module.
3. A caprolactam material recovery unit according to claim 1, wherein: and a one-way valve is arranged on the pipeline of the water inlet (3).
4. A caprolactam material recovery unit according to claim 1, wherein: the pressure compensation device (7) is an impeller type supercharging device or a diaphragm type supercharging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052143.5U CN215876878U (en) | 2021-08-27 | 2021-08-27 | Caprolactam material recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052143.5U CN215876878U (en) | 2021-08-27 | 2021-08-27 | Caprolactam material recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215876878U true CN215876878U (en) | 2022-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122052143.5U Active CN215876878U (en) | 2021-08-27 | 2021-08-27 | Caprolactam material recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215876878U (en) |
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2021
- 2021-08-27 CN CN202122052143.5U patent/CN215876878U/en active Active
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